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Wednesday, September 6, 2017

Getting hook bending off the hook

http://ift.tt/eA8V8J Bending of a hook into wire to fish for the handle of a basket by crow Betty 15 years ago stunned the scientific world. Cognitive biologists studied tool making in an Indonesian cockatoo. Other than crows, cockatoos are not using tools in the wild. The birds manufactured hook tools out of straight wire without ever having seen or used a hook tool before.

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